@@ -10,6 +10,7 @@
*/
#include <efi_selftest.h>
+#include <efi_variable.h>
#define EFI_ST_MAX_DATA_SIZE 16
#define EFI_ST_MAX_VARNAME_SIZE 40
@@ -17,6 +18,8 @@
static struct efi_boot_services *boottime;
static struct efi_runtime_services *runtime;
static const efi_guid_t guid_vendor0 = EFI_GLOBAL_VARIABLE_GUID;
+static const efi_guid_t __efi_runtime_data efi_rt_var_guid =
+ U_BOOT_EFI_RT_VAR_FILE_GUID;
/*
* Setup unit test.
@@ -45,11 +48,14 @@ static int execute(void)
u32 attr;
u8 v[16] = {0x5d, 0xd1, 0x5e, 0x51, 0x5a, 0x05, 0xc7, 0x0c,
0x35, 0x4a, 0xae, 0x87, 0xa5, 0xdf, 0x0f, 0x65,};
+ u8 v2[CONFIG_EFI_VAR_BUF_SIZE];
u8 data[EFI_ST_MAX_DATA_SIZE];
+ u8 data2[CONFIG_EFI_VAR_BUF_SIZE];
u16 varname[EFI_ST_MAX_VARNAME_SIZE];
efi_guid_t guid;
u64 max_storage, rem_storage, max_size;
+ memset(v2, 0x1, sizeof(v2));
ret = runtime->query_variable_info(EFI_VARIABLE_BOOTSERVICE_ACCESS,
&max_storage, &rem_storage,
&max_size);
@@ -63,10 +69,107 @@ static int execute(void)
EFI_VARIABLE_RUNTIME_ACCESS,
3, v + 4);
if (IS_ENABLED(CONFIG_EFI_RT_VOLATILE_STORE)) {
+ efi_uintn_t prev_len, delta;
+
if (ret != EFI_INVALID_PARAMETER) {
efi_st_error("SetVariable failed\n");
return EFI_ST_FAILURE;
}
+
+ len = sizeof(data);
+ ret = runtime->get_variable(u"RTStorageVolatile",
+ &efi_rt_var_guid,
+ &attr, &len, data);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("GetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+
+ len = sizeof(data2);
+ ret = runtime->get_variable(u"VarToFile", &efi_rt_var_guid,
+ &attr, &len, data2);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("GetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+ /*
+ * VarToFile will size must change once a variable is inserted
+ * Store it now, we'll use it later
+ */
+ prev_len = len;
+ ret = runtime->set_variable(u"efi_st_var0", &guid_vendor0,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS |
+ EFI_VARIABLE_NON_VOLATILE,
+ sizeof(v2) / 2,
+ v2 + (sizeof(v2) / 2));
+ /*
+ * This will try to update VarToFile as well and must fail,
+ * without changing or deleting VarToFile
+ */
+ if (ret != EFI_OUT_OF_RESOURCES) {
+ efi_st_error("SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+ len = sizeof(data2);
+ ret = runtime->get_variable(u"VarToFile", &efi_rt_var_guid,
+ &attr, &len, data2);
+ if (ret != EFI_SUCCESS || prev_len != len) {
+ efi_st_error("Get/SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+
+ /* SetVariableRT updates VarToFile with efi_st_var0 */
+ ret = runtime->set_variable(u"efi_st_var0", &guid_vendor0,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS |
+ EFI_VARIABLE_NON_VOLATILE,
+ sizeof(v), v);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+ len = sizeof(data2);
+ delta = 2 * (u16_strlen(u"efi_st_var0") + 1) + sizeof(v) +
+ sizeof(struct efi_var_entry);
+ ret = runtime->get_variable(u"VarToFile", &efi_rt_var_guid,
+ &attr, &len, data2);
+ if (ret != EFI_SUCCESS || prev_len + delta != len) {
+ efi_st_error("Get/SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+
+ /* append on an existing variable will updateVarToFile */
+ ret = runtime->set_variable(u"efi_st_var0", &guid_vendor0,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS |
+ EFI_VARIABLE_APPEND_WRITE |
+ EFI_VARIABLE_NON_VOLATILE,
+ sizeof(v), v);
+ if (ret != EFI_SUCCESS) {
+ efi_st_error("SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+ prev_len = len;
+ delta = sizeof(v);
+ len = sizeof(data2);
+ ret = runtime->get_variable(u"VarToFile", &efi_rt_var_guid,
+ &attr, &len, data2);
+ if (ret != EFI_SUCCESS || prev_len + delta != len) {
+ efi_st_error("Get/SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
+
+ /* Variables that are BS, RT and volatile are RO after EBS */
+ ret = runtime->set_variable(u"VarToFile", &efi_rt_var_guid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS |
+ EFI_VARIABLE_NON_VOLATILE,
+ sizeof(v), v);
+ if (ret != EFI_WRITE_PROTECTED) {
+ efi_st_error("Get/SetVariable failed\n");
+ return EFI_ST_FAILURE;
+ }
} else {
if (ret != EFI_UNSUPPORTED) {
efi_st_error("SetVariable failed\n");
Since we support SetVariableRT now add the relevant tests - Search for the RTStorageVolatile and VarToFile variables after EBS - Try to update with invalid variales (BS, RT only) - Try to write a variable bigger than our backend storage - Write a variable that fits and check VarToFile has been updated correclty - Append to the variable and check VarToFile changes - Try to delete VarToFile which is write protected Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> --- .../efi_selftest_variables_runtime.c | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+)